Design and performance of a shape memory alloy-reinforced composite aerodynamic profile

Based on a shape memory alloy (SMA)-reinforced composite developed separately, the applicability of the composite has been demonstrated through realization of a realistically scaled aerodynamic profile of around 0.5 m span by 0.5 m root chord whose skins had been made from this composite. The design, manufacturing and assembly of the profile are described. The curved skins were manufactured with two layers of SMA wires integrated into the layup of aramid fibre prepregs. All SMA wires were connected such that they can be operated as individual sets of wires and at low voltages, similar to the conditions for electrical energy generation in a real aircraft. The profile was then mounted on a vibration test rig and excited by a shaker at its tip which allowed the dynamic performance of the profile to be validated under internal actuation conditions generated through the SMA wires.

[1]  Juergen Becker,et al.  Comparison of piezoelectric systems and aerodynamic systems for aircraft vibration alleviation , 1998, Smart Structures.

[2]  Johannes Schweiger,et al.  Industrial approach to piezoelectric damping of large fighter aircraft components , 1998, Smart Structures.

[3]  Jan Schrooten,et al.  Shape memory alloy wires turn composites into smart structures: II. Manufacturing and properties , 2002, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[4]  Jayanth N. Kudva,et al.  Overview of the DARPA/AFRL/NASA Smart Wing Phase II program , 2001, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[5]  Dale M. Pitt,et al.  SAMPSON smart inlet design overview and wind tunnel test: I. Design overview , 2002, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[6]  John Botsis,et al.  Smart composites with embedded shape memory alloy actuators and fibre Bragg grating sensors: activation and control , 2005 .

[7]  Christian Boller.  Adaptive Aerospace Structures with Smart Technologies – A Retrospective and Future View , 2007 .

[8]  W Moses Robert,et al.  Vertical-tail-buffeting alleviation using piezoelectric actuators: some results of the actively controlled response of buffet-affected tails (ACROBAT) program , 1997, Smart Structures.

[9]  Dale M. Pitt,et al.  SAMPSON smart inlet design overview and wind tunnel test: II. Wind tunnel test , 2002, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[10]  Jan Schrooten,et al.  Shape memory alloy wires turn composites into smart structures: I. Material requirements , 2002, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[11]  Georg Zimmermann,et al.  Development and Application of an Optimization Procedure for Space and Aircraft Structures , 1989 .

[12]  Mark N. West,et al.  DARPA/AFRL Smart Wing Phase 2 wind tunnel test results , 2002, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.